В данном случае ошибка была моей. Как отметил @The Photon, я смешиваю векторную нотацию (частотную область) с нотацией во временной области.
Во временной области у нас есть (как указано в вопросе):
яс( т ) знак равно c о s ( ω т )
ес( т ) = Lг(яс( т ) )гтзнак равно - ω L ⋅ s я п ( ω т )
Переход от временной области к частотной области ( фазорное обозначение):
яс( т ) знак равно c о s ( ω т )⟺яс= 1 ∠ 0
В частотной области имеем:
яс= 1 ∠ 0
Ес"="Zл⋅яс= j ω L ⋅ 1 ∠ 0
Вспоминая, что:
j ω L =02+ ( ω L)2−−−−−−−−−√∠ а т а п 2 ( ω L , 0 ) знак равно ω L ∠ π2
<em><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">(Примечание: здесь я перевожу форму </font></font><strong><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">прямоугольного вектора</font></font></strong><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"> в форму </font></font><strong><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">полярного вектора</font></font></strong><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"> )</font></font></em>
<p></p>
<p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Таким образом, мы можем написать:</font></font><span class="math-container"><span class="MathJax_Preview" style="color: inherit;"></span></span></p>
<div class="MathJax_Display" style="text-align: center;">
<span class="MathJax" id="MathJax-Element-18-Frame" tabindex="0" style="text-align: center; position: relative;" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"><msub><mi>E</mi><mi>s</mi></msub><mo>=</mo><msub><mi>Z</mi><mi>L</mi></msub><mo>&#x22C5;</mo><msub><mi>I</mi><mi>s</mi></msub><mo>=</mo><mrow><mo>(</mo><mi>&#x03C9;</mi><mi>L</mi><mtext>&#xA0;</mtext><mi mathvariant="normal">&#x2220;</mi><mtext>&#xA0;</mtext><mfrac><mi>&#x03C0;</mi><mn>2</mn></mfrac><mo>)</mo></mrow><mo>&#x22C5;</mo><mrow><mo>(</mo><mn>1</mn><mtext>&#xA0;</mtext><mi mathvariant="normal">&#x2220;</mi><mtext>&#xA0;</mtext><mn>0</mn><mo>)</mo></mrow><mo>=</mo><mi>&#x03C9;</mi><mi>L</mi><mtext>&#xA0;</mtext><mi mathvariant="normal">&#x2220;</mi><mtext>&#xA0;</mtext><mfrac><mi>&#x03C0;</mi><mn>2</mn></mfrac></math>" role="presentation"><nobr aria-hidden="true"><span class="math" id="MathJax-Span-265" style="width: 24.101em; display: inline-block;"><span style="display: inline-block; position: relative; width: 19.727em; height: 0px; font-size: 122%;"><span style="position: absolute; clip: rect(1.911em, 1019.73em, 4.074em, -1000em); top: -3.224em; left: 0em;"><span class="mrow" id="MathJax-Span-266"><span class="msubsup" id="MathJax-Span-267"><span style="display: inline-block; position: relative; width: 1.145em; height: 0px;"><span style="position: absolute; clip: rect(3.145em, 1000.76em, 4.153em, -1000em); top: -3.989em; left: 0em;"><span class="mi" id="MathJax-Span-268" style="font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Е</font></font><span style="display: inline-block; overflow: hidden; height: 1px; width: 0.026em;"></span></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span><span style="position: absolute; top: -3.839em; left: 0.738em;"><span class="mi" id="MathJax-Span-269" style="font-size: 70.7%; font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">с</font></font></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span></span></span><span class="mo" id="MathJax-Span-270" style="font-family: MathJax_Main; padding-left: 0.278em;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">"="</font></font></span><span class="msubsup" id="MathJax-Span-271" style="padding-left: 0.278em;"><span style="display: inline-block; position: relative; width: 1.24em; height: 0px;"><span style="position: absolute; clip: rect(3.142em, 1000.72em, 4.153em, -1000em); top: -3.989em; left: 0em;"><span class="mi" id="MathJax-Span-272" style="font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Z</font></font><span style="display: inline-block; overflow: hidden; height: 1px; width: 0.04em;"></span></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span><span style="position: absolute; top: -3.839em; left: 0.683em;"><span class="mi" id="MathJax-Span-273" style="font-size: 70.7%; font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">л</font></font></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span></span></span><span class="mo" id="MathJax-Span-274" style="font-family: MathJax_Main; padding-left: 0.222em;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">⋅</font></font></span><span class="msubsup" id="MathJax-Span-275" style="padding-left: 0.222em;"><span style="display: inline-block; position: relative; width: 0.847em; height: 0px;"><span style="position: absolute; clip: rect(3.142em, 1000.5em, 4.153em, -1000em); top: -3.989em; left: 0em;"><span class="mi" id="MathJax-Span-276" style="font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">я</font></font><span style="display: inline-block; overflow: hidden; height: 1px; width: 0.064em;"></span></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span><span style="position: absolute; top: -3.839em; left: 0.44em;"><span class="mi" id="MathJax-Span-277" style="font-size: 70.7%; font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">с</font></font></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span></span></span><span class="mo" id="MathJax-Span-278" style="font-family: MathJax_Main; padding-left: 0.278em;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">= </font></font></span><span class="mrow" id="MathJax-Span-279" style="padding-left: 0.278em;"><span class="mo" id="MathJax-Span-280" style="vertical-align: 0em;"><span style="font-family: MathJax_Size2;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">(</font></font></span></span><span class="mi" id="MathJax-Span-281" style="font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"> ω </font></font></span><span class="mi" id="MathJax-Span-282" style="font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">L </font></font></span><font style="vertical-align: inherit;"><span class="mi" id="MathJax-Span-284" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;">∠</font></span></font><span class="mtext" id="MathJax-Span-283" style="font-family: MathJax_Main;"> </span><span class="mi" id="MathJax-Span-284" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"></font></span><span class="mtext" id="MathJax-Span-285" style="font-family: MathJax_Main;"> </span><span class="mfrac" id="MathJax-Span-286"><span style="display: inline-block; position: relative; width: 0.693em; height: 0px; margin-right: 0.12em; margin-left: 0.12em;"><span style="position: absolute; clip: rect(3.394em, 1000.57em, 4.164em, -1000em); top: -4.666em; left: 50%; margin-left: -0.286em;"><span class="mi" id="MathJax-Span-287" style="font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">π</font></font><span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span><span style="position: absolute; clip: rect(3.159em, 1000.45em, 4.153em, -1000em); top: -3.303em; left: 50%; margin-left: -0.25em;"><span class="mn" id="MathJax-Span-288" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2</font></font></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span><span style="position: absolute; clip: rect(0.861em, 1000.69em, 1.257em, -1000em); top: -1.313em; left: 0em;"><span style="display: inline-block; overflow: hidden; vertical-align: 0em; border-top: 1.3px solid; width: 0.693em; height: 0px;"></span><span style="display: inline-block; width: 0px; height: 1.093em;"></span></span></span></span><span class="mo" id="MathJax-Span-289" style="vertical-align: 0em;"><span style="font-family: MathJax_Size2;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">)</font></font></span></span></span><span class="mo" id="MathJax-Span-290" style="font-family: MathJax_Main; padding-left: 0.222em;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"> ⋅</font></font></span><span class="mrow" id="MathJax-Span-291" style="padding-left: 0.222em;"><span class="mo" id="MathJax-Span-292" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"> ( </font></font></span><span class="mn" id="MathJax-Span-293" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 </font></font></span><font style="vertical-align: inherit;"><span class="mi" id="MathJax-Span-295" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;">∠ </font></span><span class="mn" id="MathJax-Span-297" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;">0 </font></span><span class="mo" id="MathJax-Span-298" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;">)</font></span></font><span class="mtext" id="MathJax-Span-294" style="font-family: MathJax_Main;"> </span><span class="mi" id="MathJax-Span-295" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"></font></span><span class="mtext" id="MathJax-Span-296" style="font-family: MathJax_Main;"> </span><span class="mn" id="MathJax-Span-297" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"></font></span><span class="mo" id="MathJax-Span-298" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"></font></span></span><span class="mo" id="MathJax-Span-299" style="font-family: MathJax_Main; padding-left: 0.278em;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"> знак равно</font></font></span><span class="mi" id="MathJax-Span-300" style="font-family: MathJax_Math-italic; padding-left: 0.278em;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">ω</font></font></span><span class="mi" id="MathJax-Span-301" style="font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">L</font></font></span><font style="vertical-align: inherit;"><span class="mi" id="MathJax-Span-303" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;">∠</font></span></font><span class="mtext" id="MathJax-Span-302" style="font-family: MathJax_Main;"> </span><span class="mi" id="MathJax-Span-303" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"></font></span><span class="mtext" id="MathJax-Span-304" style="font-family: MathJax_Main;"> </span><span class="mfrac" id="MathJax-Span-305"><span style="display: inline-block; position: relative; width: 0.693em; height: 0px; margin-right: 0.12em; margin-left: 0.12em;"><span style="position: absolute; clip: rect(3.394em, 1000.57em, 4.164em, -1000em); top: -4.666em; left: 50%; margin-left: -0.286em;"><span class="mi" id="MathJax-Span-306" style="font-family: MathJax_Math-italic;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">π</font></font><span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span><span style="position: absolute; clip: rect(3.159em, 1000.45em, 4.153em, -1000em); top: -3.303em; left: 50%; margin-left: -0.25em;"><span class="mn" id="MathJax-Span-307" style="font-family: MathJax_Main;"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2</font></font></span><span style="display: inline-block; width: 0px; height: 3.989em;"></span></span><span style="position: absolute; clip: rect(0.861em, 1000.69em, 1.257em, -1000em); top: -1.313em; left: 0em;"><span style="display: inline-block; overflow: hidden; vertical-align: 0em; border-top: 1.3px solid; width: 0.693em; height: 0px;"></span><span style="display: inline-block; width: 0px; height: 1.093em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 3.224em;"></span></span></span><span style="display: inline-block; overflow: hidden; vertical-align: -0.904em; border-left: 0px solid; width: 0px; height: 2.373em;"></span></span></nobr><span class="MJX_Assistive_MathML MJX_Assistive_MathML_Block" role="presentation">
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
<msub>
<mi><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">
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<mi mathvariant="normal"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">
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<mi><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">
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<mn><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">
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</mfrac>
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</div>
<script type="math/tex; mode=display" id="MathJax-Element-18">E_s=Z_L \cdot I_s=\left (\omega L \space \angle \space \frac{\pi}{2} \right) \cdot \left( 1 \space \angle \space 0 \right)= \omega L \space \angle \space \frac{\pi}{2}
Переход от частотной области ( фазорное обозначение) к временной области :
Ес= ш L ∠ π2⟺ес( т ) знак равно ω L ⋅ c о s ( ω т +π2) знак равно-ωL⋅sяп(ωт)
Таким образом, оба метода дают одинаковый результат.
Примечание. Вспоминая, что от частоты к временной области мы имеем:
j ω⟺ггт
Мы видим, что:
Ес"="Zл⋅яс= j ω L ⋅яс= L ⋅ ( j ωяс)⟺лг(яс( т ) )гт"="ес( т )
Фотон
Винисиус АКП